﻿<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %>

<!DOCTYPE html>

<html xmlns="http://www.w3.org/1999/xhtml">
<head id="HEAD1" runat="server">
<meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
    <title>无标题</title>
</head>
<body>
    <form id="form1" runat="server">
    <div>
    <asp:TextBox ID="Num1" runat="server" ></asp:TextBox>
        <select id="selectOper" runat="server">
            <option>+</option>
            <option>-</option>
            <option>*</option>
            <option>/</option>
        </select>
        <asp:TextBox ID="Num2" runat="server" ></asp:TextBox>
        <asp:Button ID="Button1" runat="server" Text="=" OnClick="Button1_Click"/>
            <asp:TextBox ID="Result" runat="server"></asp:TextBox>
    </div>
    </form>
</body>
</html>
